Photos: Rory McIlroy's 2013 Season in Review

Having ascended to the top of the World Golf Rankings in 2012, Nike unveiled Rory McIlroy as a new brand ambassador in January 2013. Reportedly worth $20 million annually, the blockbuster endorsement deal placed the young McIlroy among the sport's top-paid players, though many would blame the switch to Nike clubs for his struggles throughout the year.